Drive-calk for horseshoes.



G. 8. EVEHHART.

DRIVE CALK FOR HDRSESHOES.

APPLICATION FILED APR. 8. me

1 ,274,025. Patented July 30, 1918.

UNITED sT TEsrA ENT OFFICE.

GEORGE s. EVERHART, or oSH osH, WISCONSIN.

DRIVE-CALK non "Hon'snsnons.

Specification of Letters Patent. Patented July 30, 1918.

Application filed April 8, 1916. Serial N0. 89,765.

To all whom it may concern:

Be it known that I, Gnonen S. EVERHART, a citizen of the United States, residing at Oshkosh, county of Vinnebago, and State of lVisconsin, have invented new and useful Improvements in Drive-Calks for Horseshoes, of which the following tion.

My invention relates to improvementsin is a specificadrive calks for horseshoes and pertains espe-.

cially to the toe calks. V I

Heretofore, a common practice has been to drive a pair of ordinary calks into sockets formed in the toe of the shoe, each of said calks having a blade similar to the blade of a heel calk and only a little wider than the shank. These calks frequently prove inadequate in soft ice or ground through which they tend to strip when the horse is pulling a heavy load. Also they tendto rotate and frequently do rotate upon the shankaxes, whereby the blades are shifted from a normal position, transverse to the shoe, to various angular positions in, which they furnish an unstable support, frequently causing the horse to stumble and in some instances producing severe injuries.

The object of my invention is to provide.

means whereby a single toe calk, having an elongated blade, may be securely anchored to a shoe by a pair of shanks. A further object of my invention is to provide means whereby a air of shanks connected with a single calk lade, may be anchored in the ordinary sockets, notwithstanding the fact that the axes of the sockets may not register exactly with the axes of the shanks. It is not possible to'make horseshoes in which the sockets will be exactly located or definitely spaced to receive a plurality of shanks carried by a single calk, since each horseshoe requires fitting to the hoof preparatoryto attaching it and inserting the calks." Myin vention, therefore, contemplates the, use of eccentrica'lly formed socket. bushings, which may be rotated to any desired positmn Apr e r paratory to inserting thelcalk shanks and which are contractible upon the shanks when the latter are driven into position.

In the drawings: p Figure 1 is a view of the under side of a horseshoe showing my improved toecalkin position for use. 7 n Fig. 2 is a fragmentary view of the toe portion of the shoe, as seen from the under side, the toe calk :being removed and one portion of the shoe, including one of the anchorsockets and. bushings, being illustrated in horizontal section, drawn generally on line 22 of Fig. 3.

. Fig. 3 is avertical sectional view drawn on line 33 of Fig. 1.

Fig. 4 is a perspective view of my improved toe calk detached. 7

'Like parts are identified bythe same refer-' ence characters throughout the several views.

A horseshoe A may be of any ordinary construction, in which drive sockets are provided on the toe portion; The shoe illustrated is provided with heel calks B of the drive-call: type, these also being of ordinary construction. The specific type of heel calk is non-essential. The toe of the shoe is provided with a. pair of shank-receiving aperbushing forms the wall, is eccentric'ally located with reference to the aperture or socket G in the shoe. Normally the edges of the bushings are slightlyseparated at the slits (5, whereby, when the bushings are driven .into the sockets 0, their walls are pressed inwardly, thereby contracting the openingE and bringing the edges nearer together at the slits d.

The toe calk blade F is long enough to extend entirely across both of-the apertures C formed-in the toe ofthe shoe, the ends these apertures :on each sides The portion of {the blade. nearest the shoe-may be abruptly thickened on. the rear side, there- 1 by providing a reinforcing flange F. This of the bla de F preferably projecting beyond 1 feature will i be used; principally, however,

for the sharp calks.

the same distance from each other as the From this .blade, a ,p i 0f--. h nks-. e d upwar ly: T ese. .-shanks are spaced apart approximately at sockets C in the toe of the shoe. They may 7 also, if desired, be slightly tapered'upwardly and their diameter is such that when the shanks are inserted into the bushings D. and driven with the bushings into the shoe sockets, the bushings will contract upon the shanks and anchor them rigidly in position.

Preparatory to driving in the toe. calk shanks G, the bushings will be rotatively adjusted until they are in a position to enter the sockets. They are preferably first placed upon the shanks, and then rotated, while the shanks and bushings are being adjusted to the sockets. Therefore, the apertures E will provide sockets in which the shanks may be accurately seated, without cramping or binding against one wall or side of the aperture, more than against another wall or side thereof. Also, both bushings and shanks may be driven in simultaneously and far enough to be securely anchored in the shoe sockets C, whereupon each shank G will reinforce the other and the calk blade F will be held rigidly in a true transverse position. The flanges D need not bear upon the shank but the bushings and sockets may be so formed that the bushings will be contracted on the shanks and wedged into the sockets tightly before the flanges D reach the shoe. I am, therefore, enabled to provide a driven toe calk having the form and all the advantages of a welded calk with the additional advantage that my improved toe calk may be extracted from the shoe and replaced at pleasure or other toe calks substituted without removing the shoe from the hoof of the horse.

lVhile I have described the shanks G of my improved toe calk, as possibly having a slight upward taper, it is obvious that this is not essential. If the outer surface of the bushing D and also the wall of the socket C are slightly tapered, a bushing which fits the socket and also the shank, may be wedged in between the shank and the socket wall by driving in the shankand bushing, even though the shank may be cylindrical in form.

The form of the calk blade is immaterial and may be changed at pleasure to suit the requirements of the road, or of changing seasons.

I claim I 1. A horseshoe provided with a set of toe sockets, bushings seated in said sockets, and a toe calk having a plurality of shanks anchored in said sockets with the bushings interposed between the shanks and the socket walls, said bushings being split and having shank-receiving apertures eccentrical to the sockets in which the bushings are seated,

whereby the bushings may be rotatively adjusted upon the shanks, to properly enter the sockets preparatory to driving the shanks and bushings into the sockets.

2. A horseshoe provided with a set of calk-receiving sockets, a calk having a plurality of shanks adapted to enter said sockets, and anchor members adjustably mounted'in said sockets and adaptedin different adjustments to vary the position of the shanks therein, said anchor members being also adapted to serve as wedges to rigidly hold the shanks in the sockets.

3. A toe calk having an elongated blade provided with a reinforcing flange along its upper margin and also having a set of shanks connected with the upper margin of said blade, in combination with a shoe provided with a set of toe sockets adapted to receive said shanks and a set of eccentric contractible bushings adapted to be interposed between the shanks and the socket walls, said bushings being rotatably adjustable to facilitate the insertion of the shanks.

4. A horseshoe provided with a calk-receiving socket, a calk having a shank seated in said socket, and a split bushing interposed between the calk shank and. the wall of the socket, said bushing being thicker upon one side than upon the other.

5. A toe calk having an elongated blade provided, near each end, with an upwardly projecting shank, in combination with a set of split bushings adapted to embrace said shanks, said bushings having shank-receiving apertures eccentric to their outer surfaces.

6. A toe calk having an elongated blade.

provided, near each end, with an upwardly projecting shank, in combination with a set of split bushings adapted to embrace said shanks, said bushmgs having shank-receivmg apertures eccentric to their outer surfaces, and said bushings also having'out-' wardly projecting annular flauge'sat their lower ends.

7 horseshoe provided with a set of toe sockets, in combination with a toe calk having a plurality of shanks adapted to enter said sockets respectively, and means for anchoring the shanks in the socketswith the Copies of this patent may be obtained for-five cents each, by addressing the Commissioner of Batents,

' Washington, D. 0. 

